【转帖】8540w等机型cpu的性能比较 i7 720qm 820qm 920xm 620m

zybon

总的来说：
920xm >> 820qm > 620m = 720qm
以下是评测数据


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720qm vs 820qm
http://forum.notebookreview.com/hardware-components-aftermarket-upgrades/442139-core-i7-720qm-vs-core-i7-820qm-benchmarks.html#fritz

所有测试均按照测试软件的默认设置进行

Benchmarks

The following benchmarks were run, links to the results for each test.

1. WPrime

2. Fritz Chess Benchmark

3. 3DMark Vantage

4. 3DMark 06

5. BarsWF (CUDA)

6. SuperPi 2M




WPrime
*lower is better*

Core i7 720QM = 32M - 15.911 sec - 1024M 494.534 sec
Core i7 820QM = 32M - 12.903 sec - 1024M 419.56 sec






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Fritz Chess Benchmark

Core i7 720QM = 12.12 / 5818 kN/s
Core i7 820QM = 15.23 / 7308 kN/s





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3DMark Vantage
1280x1024 - Preset: Performance

Core i7 720QM = P6572 - CPU - 26095 - GPU - 5260
Core i7 820QM = P6582 - CPU - 28663 - GPU - 5237





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3DMark '06
1280x1024

Core i7 720QM = 11,901
Core i7 820QM = 12,409





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Bars_WF

Core i7 720QM = 551.92 MH/s - CPU ~ 16 MH/s per core/thread
Core i7 820QM = 565.28 MH/s - CPU ~ 19 MH/s per core/thread





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SuperPi
(**Thanks to trvelbug for providing the720QM score.)

*lower is better*
Core i7 720QM (2M) = 35 seconds
Core i7 820QM (2M) = 30 seconds





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*******************************************************************
820qm vs 920xm
http://forum.notebookreview.com/hardware-components-aftermarket-upgrades/452795-test-result-i7-820qm-i7-920xm-2.html










cont












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i7-620m
http://forum.notebookreview.com/hardware-components-aftermarket-upgrades/455347-i7-620m-benchmarks.html#post5802924


Thanks to shirleyfu1117, I was able to compare i7 620M with the i7 720QM.

Core i7 620M/2 cores/2.66GHz
Cinebench R10 32-bit
Single Thread: 3615
Multi-Thread: 7786

WPrime
16.099

Everest
FPU SinJulia
2859

CPU Zlib
48288

Core i7 720QM/4 cores/1.60GHz
Cinebench R10 32-bit
Single Thread: 2966
Multi-Thread: 7702

WPrime
16.117

Everest
FPU SinJulia
3225

CPU Zlib
42192

Performance Summary:

Cinebench R10 32-bit
21.9%/1.9%(Single/Multi) advantage for i7 620M
Equal in WPrime
12.8% advantage to Core i7 720QM in FPU SinJulia
14.4% advantage to Core i7 620M in CPU Zlib

In multi-threaded apps the Core i7 620M was on par, or faster than Core i7 720QM.
In single and lightly threaded apps, there was no contest, the
Core i7 620M wins by miles. There's no reason to opt for Core i7 720QM.

[ Edited by  zybon on 2011-7-16 14:30 ]

dnv2001

等8540价格下来之后再入手.

MUDboy

我选择Core i7 720QM的理由不是速度快，因为现在CPU的速度在整体系统当中都搓搓有余了

主要是720QM配置在8540w上能够支持更大的内存

www6543

看不懂全部红XX

坐山雕zp

920qs的我找了两个都点不亮，只好用820了，但朋友上的840感觉和820差不多，920啊，正式的买不起，qs的点不亮

zybon

帮顶，920xm qs 的确点不亮

yelo

mark一个

sunnyfxh

i7真是强劲！